| /* |
| * Copyright 2011 Google Inc. |
| * |
| * Licensed under the Apache License, Version 2.0 (the "License"); you may not |
| * use this file except in compliance with the License. You may obtain a copy of |
| * the License at |
| * |
| * http://www.apache.org/licenses/LICENSE-2.0 |
| * |
| * Unless required by applicable law or agreed to in writing, software |
| * distributed under the License is distributed on an "AS IS" BASIS, WITHOUT |
| * WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied. See the |
| * License for the specific language governing permissions and limitations under |
| * the License. |
| */ |
| |
| package com.google.gwt.uibinder.rebind.model; |
| |
| import com.google.gwt.uibinder.rebind.FieldManager; |
| import com.google.gwt.uibinder.rebind.IndentedWriter; |
| import com.google.gwt.uibinder.rebind.MortalLogger; |
| import com.google.gwt.uibinder.rebind.Tokenator; |
| |
| import java.util.ArrayList; |
| import java.util.HashSet; |
| import java.util.List; |
| import java.util.Set; |
| |
| /** |
| * Model class for SafeHtml templates used in generated UiBinder rendering |
| * implementation. |
| */ |
| |
| public class HtmlTemplatesWriter { |
| private final List<HtmlTemplateMethodWriter> htmlTemplates = new ArrayList<HtmlTemplateMethodWriter>(); |
| private final Set<String> safeConstantExpressions = new HashSet<String>(); |
| private final Set<String> uriExpressions = new HashSet<String>(); |
| private final FieldManager fieldManager; |
| private final MortalLogger logger; |
| |
| public HtmlTemplatesWriter(FieldManager fieldManager, MortalLogger logger) { |
| this.fieldManager = fieldManager; |
| this.logger = logger; |
| } |
| |
| /** |
| * Add a SafeHtml template and an instance method for invoking the template to |
| * the generated BinderImpl class. These templates are declared at the |
| * beginning of the class and instantiated with a GWT.create(Template.class |
| * call. |
| * <p> |
| * Note that the UiBinder#tokenator is used to determine the arguments to the |
| * generated SafeHtml template. |
| * |
| * @return the object that models this template method |
| */ |
| public HtmlTemplateMethodWriter addSafeHtmlTemplate(String html, Tokenator t) throws IllegalArgumentException { |
| if (html == null) { |
| throw new IllegalArgumentException("Template html cannot be null"); |
| } |
| if (t == null) { |
| throw new IllegalArgumentException("Template tokenator cannot be null"); |
| } |
| |
| HtmlTemplateMethodWriter method = new HtmlTemplateMethodWriter(html, t, this); |
| htmlTemplates.add(method); |
| |
| return method; |
| } |
| |
| public int getNumTemplates() { |
| return htmlTemplates.size(); |
| } |
| |
| public List<HtmlTemplateMethodWriter> getTemplates() { |
| return htmlTemplates; |
| } |
| |
| public boolean isEmpty() { |
| return htmlTemplates.isEmpty(); |
| } |
| |
| public boolean isSafeConstant(String expression) { |
| return safeConstantExpressions.contains(expression); |
| } |
| |
| public boolean isUri(String expression) { |
| return uriExpressions.contains(expression); |
| } |
| |
| public void noteSafeConstant(String expression) { |
| safeConstantExpressions.add(expression); |
| } |
| |
| public void noteUri(String expression) { |
| uriExpressions.add(expression); |
| } |
| |
| /** |
| * Write the SafeHtmlTemplates interface and its GWT.create() call. |
| */ |
| public void writeInterface(IndentedWriter w) { |
| w.write("interface Template extends SafeHtmlTemplates {"); |
| w.indent(); |
| for (HtmlTemplateMethodWriter t : htmlTemplates) { |
| t.writeTemplateMethod(w); |
| } |
| w.outdent(); |
| w.write("}"); |
| w.newline(); |
| w.write("Template template = GWT.create(Template.class);"); |
| } |
| |
| /** |
| * Write the no-arg methods that that call each template method. These are |
| * called from HTMLPanelParser constructors and such. |
| */ |
| public void writeTemplateCallers(IndentedWriter w) { |
| for (HtmlTemplateMethodWriter t1 : htmlTemplates) { |
| t1.writeTemplateCaller(w); |
| } |
| } |
| |
| FieldManager getFieldManager() { |
| return fieldManager; |
| } |
| |
| MortalLogger getLogger() { |
| return logger; |
| } |
| |
| /** |
| * Increment the total number of templates. |
| */ |
| int nextTemplateId() { |
| return htmlTemplates.size() + 1; |
| } |
| } |